MicroRNA-133a inhibits gastric cancer cells growth, migration, and epithelial-mesenchymal transition process by targeting presenilin 1.

Journal of Cellular Biochemistry
Xin-Bo ChenAi-Xia Chu

Abstract

Gastric cancer (GC) is one of the most common malignancies and a leading cause of cancer-related death worldwide. Accumulating evidence reported that microRNA (miR)-133a was involved in GC. This study aimed to investigate the function and mechanism of miR-133a in the development and progression of GC. The expression of miR-133a and presenilin 1 (PSEN1) in two GC cell lines, SGC-7901 and BGC-823, were inhibited and overexpressed by transient transfections. Thereafter, cell viability, migration, and apoptosis were measured by trypan blue exclusion assay, transwell migration assay, and flow cytometry assay, respectively. Dual-luciferase reporter assay was conducted to verify whether PSEN1 was a direct target of miR-133a. Furthermore, quantitative real-time polymerase chain reaction and Western blot analysis were mainly performed to assess the expression changes of epithelial-mesenchymal transition (EMT)-associated proteins, apoptosis-related proteins, and Notch pathway proteins. MiR-133a inhibitor significantly increased cell viability and migration, while miR-133a mimic decreased cell viability, migration, and induced apoptosis. miR-133a suppression accelerated transforming growth factor-β1 (TGF-β1)-induce EMT, as evidenced by up...Continue Reading

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Citations

Jul 17, 2020·The American Journal of Chinese Medicine·Hsin-Yu HoChiao-Wen Lin
Sep 29, 2019·World Journal of Gastrointestinal Oncology·Lei-Ying YangMing-Shun Zhou
Jun 21, 2020·Signal Transduction and Targeted Therapy·Lei LiuShouping Xu
May 29, 2020·Technology in Cancer Research & Treatment·Guochen ZhangXiangdong Bai
Sep 19, 2020·Molecular & Cellular Oncology·Joanna Pancewicz
Aug 27, 2019·Journal of Molecular Medicine : Official Organ of the Gesellschaft Deutscher Naturforscher Und Ärzte·Lejla MedzikovicMansoureh Eghbali

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